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Oil vs. Water Temps - What is most critical to monitor - Road Race Car

Posted by High PSI, Nov 21, 2019

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  1. High PSI

    High PSI Proven Member

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    USA, Australia
    I'm building a 2g GSX road race car and I've got a place to monitor oil (Moroso pan) and water (thermostat housing) temps, but only one aftermarket temp gauge at the moment. Which would you monitor with an aftermaket gauge/sensor - oil or water?

    Lots of varying opinions on the internet. Most motorsport guys tend to suggest that oil is most important, but figured I would seek some DSM specific advice.

    The gauge I'm using is an old-school Apexi EL, which has the warning lights. It's an important function to me as when I'm on the track I tend to ignore gauges....but flashing red lights do get my attention.

    I'll have the factory coolant gauge still functioning but of course this is a non-linear dummy gauge, which I suppose doens't matter as I really only care about the exact temp and just need to know when it is getting too extreme. From this perspective, an oil temp gauge would be the best bet as I have all the water temp info I need.

    However, as noted I really don't pay attention to gauges when I'm driving in anger so I'm wondering if a coolant gauge would be the way to go as the blinking red light when a pre-set temp is exceeded would give me the earliest warning of the car overheating.

    Thoughts?
     
  2. buddahboost

    buddahboost Proven Member

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    CHICAGO HEIGHTS, Illinois
    You going to run a oil cooler? I'd be more worried about oil pressure than temp. At least for now I'd run water temp.
     
    BLACK'98DSM likes this.
  3. ec17pse

    ec17pse Freelancer

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    London, Europe
    Oil pressure over temps but temps is also helpful on oil so you know if your over hesting your oil for the race or need to swap oil grades. Water is good to moniter but in racing its a quick thing to go bang so by the time its risen its likely too late
     

    Road Race Build 9K  10  51

    1997 Mitsubishi Eclipse GST
    175 whp · 180.1 lb/ft · 2G DSM
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  4. High PSI

    High PSI Proven Member

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    Joined Oct 21, 2004
    USA, Australia
    Yes, running an oil cooler.

    Yes definitely running an oil pressure gauge - particularly as my last two engines went due to oil pressure issues. Actually I only have the spare temperature gauge because the guy I bought the oil pressure gauge from threw the matching gauge in for free.

    I've had situations in the past where both would have been of value. In the Audi TT I used to road-race, I had one situation where my coolant temps stayed perfect but oil over-heated and thinned out so badly after a 60-minute session that it was seeping out from the entire perimiter of the oil pan, where it had never leaked prior. Would have been good to have a warning that my oil-temps were way out of wack. In my Miata, I had an issue with a thermostat that failed shut and overheated the engine mid-session. I almost blew a headgasket or warped the head, but just happened to glance down and catch the temp-gauge pinned. Would have been great to have a flashing-red light at eye-level alerting me to the issue.
     
  5. rabenne

    rabenne Proven Member

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    Racine, Wisconsin
    Defi ZD has warnings for both oil temp and water temp.

    You can set it to beep at you when a parameter goes above a set point. Also works for: oil pressure, fuel pressure, EGT, WBO2, Boost, maybe other stuff I am forgetting...


    defizd.jpg
     

    Street Build 238  5

    1996 Mitsubishi Eclipse GSX
    awd · automatic · 2G DSM

    Street Build 183  12

    1997 Mitsubishi Eclipse GST
    fwd · automatic · 2G DSM

    Street Build 7K  9

    1995 Eagle Talon TSi
    awd · manual · 2G DSM
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    buddahboost likes this.
  6. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    ^^^^^
    NICE!!! How come I don't have nice toys like that???
     

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    1967 Chevrolet Camaro RS
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    1990 Eagle Talon TSi AWD
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  7. BLACK'98DSM

    BLACK'98DSM Proven Member

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    Because you buy so many cars that you have no extra money or time left over! :p
     

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  8. rabenne

    rabenne Proven Member

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    BC you have self respect and dont waste all your money on your car as an attempt at happiness???

    Yes, I fill the holes in my life with car parts...
     

    Street Build 238  5

    1996 Mitsubishi Eclipse GSX
    awd · automatic · 2G DSM

    Street Build 183  12

    1997 Mitsubishi Eclipse GST
    fwd · automatic · 2G DSM

    Street Build 7K  9

    1995 Eagle Talon TSi
    awd · manual · 2G DSM
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    Dusty Landrum and BLACK'98DSM like this.
  9. BLACK'98DSM

    BLACK'98DSM Proven Member

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    Me too... Or at least I try to LOL
     

    Road Race Build 2K  25

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM

    389  3

    2012 Murray Explorer Dune
    rwd · automatic · Misc Vehicles

    297  6

    2009 Troy Bilt Bronco
    rwd · automatic · Misc Vehicles
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  10. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    4,586
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    Joined Nov 14, 2013
    Independence, Kansas
    Me THREE.....!!! And I am HAPPY!!! :D
     

    Street Build 3K  27

    1992 Eagle Talon TSi AWD
    awd · automatic · 1G DSM

    543  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    450  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 654  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 5K  11  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
    Loading...
    Vegas smith likes this.
  11. rabenne

    rabenne Proven Member

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    Must be nice...
     

    Street Build 238  5

    1996 Mitsubishi Eclipse GSX
    awd · automatic · 2G DSM

    Street Build 183  12

    1997 Mitsubishi Eclipse GST
    fwd · automatic · 2G DSM

    Street Build 7K  9

    1995 Eagle Talon TSi
    awd · manual · 2G DSM
    Loading...
  12. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    4,586
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    Joined Nov 14, 2013
    Independence, Kansas
    My CC doesn't especially like it (it is screaming at me for building a car with it) LOL. But I wasn't waiting paycheck to paycheck to get this, that and whatever was needed. Probably be 10 months before the car is paid for (on the CC).
     

    Street Build 3K  27

    1992 Eagle Talon TSi AWD
    awd · automatic · 1G DSM

    543  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    450  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 654  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 5K  11  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
    Loading...
  13. TSiAWD666

    TSiAWD666 Freelancer

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    Water temp over Oil temp.

    Also, if you want another Apexi EL temp gauge I think I still have mine. PM me if you're interested and I'll dig it out.
     

    Road Race Build 14K  12  371

    1999 Mitsubishi Eclipse GSX
    377 whp · 416 lb/ft · 2G DSM
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  14. High PSI

    High PSI Proven Member

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    That is very nice, but I'm already heavily invested in my OG Apexi EL setup that I committed to when I bought installed my first boost gauge 17 years ago, that was chosen over everything else available because I thought it looked cool (and I could get it in PSI). Can't justify scrapping and starting fresh now. I'm already dumping way too much money into a car that I only get to see 2-weeks a year and has been broken for 10 of the last 17. ROFL

    Not to get off topic, but any more info on your in-dash setup with ECMLink? Is that a windows tablet?

    Thank you - was hoping for some feedback from someone with track experience in these cars. I've autocrossed mine but never tracked it and from my experience with other cars I've tracked, understand that different platforms have different typical fault-points that need to be monitored.

    I think I remember from seeing your pics that you have the black-faced gauges? I've got white...
     

    Attached Files:

  15. rabenne

    rabenne Proven Member

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    Link is running on a raspberry pi 3b+. I custom mounted a standalone 8" multi touch monitor.

    Whole setup was about $150 all said and done.

    It also runs android auto. Check out OpenAuto Pro.
     

    Attached Files:

    Street Build 238  5

    1996 Mitsubishi Eclipse GSX
    awd · automatic · 2G DSM

    Street Build 183  12

    1997 Mitsubishi Eclipse GST
    fwd · automatic · 2G DSM

    Street Build 7K  9

    1995 Eagle Talon TSi
    awd · manual · 2G DSM
    Loading...
    rafaelvanhalen and ec17pse like this.
  16. syndr0me

    syndr0me Proven Member

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    Pincourt, QC, Canada

    Link running on android OS. Did I get that right ??
     
  17. rabenne

    rabenne Proven Member

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    Joined Apr 21, 2006
    Racine, Wisconsin
    Raspberry pi runs a version of LINUX called raspbian. I am using the linux version of link in the raspbian os.

    Android auto is separate from ecmlink entirely. Just more functionality for a touchscreen in the dash...
     

    Street Build 238  5

    1996 Mitsubishi Eclipse GSX
    awd · automatic · 2G DSM

    Street Build 183  12

    1997 Mitsubishi Eclipse GST
    fwd · automatic · 2G DSM

    Street Build 7K  9

    1995 Eagle Talon TSi
    awd · manual · 2G DSM
    Loading...
  18. High PSI

    High PSI Proven Member

    120
    7
    Joined Oct 21, 2004
    USA, Australia
    Any how-to's/VFAQs/guides that could be followed?
     
  19. rabenne

    rabenne Proven Member

    1,009
    239
    Joined Apr 21, 2006
    Racine, Wisconsin
    Not yet decided if I will share all the specifics. I think someone is planning to sell something similar. Let's wait and see what that looks like...
     

    Street Build 238  5

    1996 Mitsubishi Eclipse GSX
    awd · automatic · 2G DSM

    Street Build 183  12

    1997 Mitsubishi Eclipse GST
    fwd · automatic · 2G DSM

    Street Build 7K  9

    1995 Eagle Talon TSi
    awd · manual · 2G DSM
    Loading...

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